Fair Value of Financial Instruments - Corporations assets measured at fair value on a recurring basis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment, at fair value	$ 1,082	$ 1,047
Other equity investments, fair value	565	540
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	1,809	1,849
Loans held for investment, at fair value	1,082	1,047
Other equity investments, fair value	565	540
Interest-only strips	6	8
Total assets	3,462	3,444
Liabilities	0	0
Total liabilities	0	0
Recurring \| U.S. government agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	1,185	1,208
Recurring \| U.S. government sponsored enterprise MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	539	553
Recurring \| Private issue CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	85	88
Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	0	0
Loans held for investment, at fair value	0	0
Other equity investments, fair value	0	0
Interest-only strips	0	0
Total assets	0	0
Liabilities	0	0
Total liabilities	0	0
Recurring \| Level 1 \| U.S. government agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	0	0
Recurring \| Level 1 \| U.S. government sponsored enterprise MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	0	0
Recurring \| Level 1 \| Private issue CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	0	0
Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	1,724	1,761
Loans held for investment, at fair value	0	0
Other equity investments, fair value	565	540
Interest-only strips	0	0
Total assets	2,289	2,301
Liabilities	0	0
Total liabilities	0	0
Recurring \| Level 2 \| U.S. government agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	1,185	1,208
Recurring \| Level 2 \| U.S. government sponsored enterprise MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	539	553
Recurring \| Level 2 \| Private issue CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	0	0
Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	85	88
Loans held for investment, at fair value	1,082	1,047
Other equity investments, fair value	0	0
Interest-only strips	6	8
Total assets	1,173	1,143
Liabilities	0	0
Total liabilities	0	0
Recurring \| Level 3 \| U.S. government agency MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	0	0
Recurring \| Level 3 \| U.S. government sponsored enterprise MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	0	0
Recurring \| Level 3 \| Private issue CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - available for sale	$ 85	$ 88

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Loans Receivable, Interest Income, Fair Value Disclosure

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Fair value portion of asset recognized for present right to economic benefit.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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